I agree, the simpler solution is a function call to "doInit" from the "process" slot, once. About the last paragraph and the qthread, I have read that subclassing qthreads is not the correct way to do it; So I instantiate a worker object (dataserver) and hoist it onto the new thread, with moveToThread. QThread with signals and slots | Qt Forum You start work in your thread by giving your worker object a slot. In the default implementation, your thread will get an event loop (run() calls exec()), so you can invoke a slot in it. You can invoke that slot by connecting a signal to it from the main thread, or by using QMetaObject::invokeMethod. Multithreading Technologies in Qt | Qt 5.12 Call WorkerScript.sendMessage() to start the computation in a new thread. Let the script call sendMessage() too, to pass the result back to the GUI thread. Handle the result in onMessage and update the GUI there. Permanent: Have an object living in another thread that can perform different tasks upon request and/or can receive new data to work ... Threading Basics | Qt 4.8
coding style - Is it good practice to have your C++/Qt functions ...
Utility classes related to Qt signal and slot handling ... to invoke, 6 years ago. QtSignalForwarder.cpp · Use Q_GLOBAL_STATIC() to manage the per-thread arrays of proxies, 5 years ago ... QtCallback - Package up a receiver and slot arguments into an object for invoking later. .... You signed in with another tab or window. Qt5 Tutorial QThreads - Gui Thread - 2018 - BogoToBogo Hitting the "Start" button will trigger slot, and in that slot, start() method of the thread will be called. The start() will call the thread's run() method where a valueChanged() signal will be emitted. ... We'll use Qt Gui Application with QDialog. Then ... Why I dislike Qt signals/slots Feb 19, 2012 ... Most of the time I think I might as well make use of Qt's signals/slots system ... during Qt's event loop and, if the target is in another thread, the arguments ... the signal and the slot (or second signal) and call QObject::connect() . qt4 - Invoke slot method without connection? - Stack Overflow
Jan 25, 2017 ... If you want to capture multiple variables, just separate them with commas, .... Just like a classic signal-slot connection, if the context object thread is not ... You can tell Qt to call Foo::doSomething() when it is back to the event ...
Qt 4.5 - Is emitting signal a function call, or a thread, and ... I am not sure about the nature of the signal/slot mechanism in Qt 4.5. When a signal is emitted, is it a blocking function call or a thread? Say this emit GrabLatestData(); // proceed with latest... Synchronizing Threads | Qt 5.12
Why I dislike Qt signals/slots
What do I do if a slot is not invoked? - KDAB Qt automatically breaks a signal/slot connection if either the sender or the receiver are destroyed (or if context object is destroyed, when using the new connection syntax and connecting to freeif the thread that invokes the signal is the same thread the receiver has affinity with, use a direct connection [Qt] Вызов slot без привязки к signal, другими словами -…
Effective Threading Using Qt - John's Blog
Qt: сокеты, таймеры и потоки | Уголок быдлокодера
If connectionType is Qt::AutoConnection, the member is invoked synchronously if object lives in the same thread as the caller; otherwise it will invoke the member asynchronously. The return value of this method call is placed in returnValue . Communicating with the Main Thread - InformIT Communicating with the Main Thread. When a Qt application starts, only one thread is running—the main thread. This is the only thread that is allowed to create the QApplication or QCoreApplication object and call exec() on it. Threads Events QObjects - Qt Wiki Notice that since QNetworkAccessManagers and QNetworkReplys are QObjects, they're not thread-safe, therefore you can't just move them to another thread and continue using them from your thread, because they may be accessed at the same time by two threads: yours and the one they're living in, due to events that will be dispatched to them by the latter thread's event loop. QThread — Qt for Python - doc-snapshots.qt.io Thus, a developer who wishes to invoke slots in the new thread must use the worker-object approach; new slots should not be implemented directly into a subclassed QThread. Unlike queued slots or invoked methods, methods called directly on the QThread object will execute in the thread that calls the method.